body,html{
	width: 100%;
	margin: 0;
	padding: 0;
}

.a_wrap {
	width: 100%;
	overflow: hidden;
	position: relative;
}

.a_show {
	position: absolute;
	left: 0;
	top: 0;
}

.a_show img {
	float: left;
}

.a_ball {
	list-style: none;
	position: relative;
	margin-top: 8rem;
	margin-left: 6rem;
}

ul li {
	display: inline-block;
	width: 15px;
	height: 15px;
	border-radius: 50%;
	background: white;
	margin-right: 20px;
	text-align: center;
}
